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22 May 2026

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High 8.8

CVE-2026-45659 Exploited · Ransomware Public exploit EPSS 80%

Microsoft SharePoint Remote Code Execution Vulnerability

Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

Microsoft Microsoft SharePoint Server 2019 Microsoft SharePoint Enterprise Server 2016 Microsoft SharePoint Server Subscription Edition

May 22, 2026
KEV Jul 1, 2026